9%20ECOGRAFIA%20ABDOMINAL%20COMO%20CUANDO%20DONDE

28
ABDOMINAL ULTRASOUND
RHV
MHV
LHV
Middle RHV
Inferior RHV
A
Figure 2.23
IVC.
IVC
B
(A) Configuration of the hepatic venous system. (B) Inferior middle hepatic vein (arrow) arising from the
Figure 2.25 TS through the epigastrium, demonstrating
the normal splenic vein with flow towards the liver. Note
the change from red to blue as the vessel curves away
from the transducer.
Figure 2.24 Main portal vein at the porta hepatis
demonstrating hepatopetal flow. The higher velocity
hepatic artery lies adjacent to the Main portal vein (arrow).
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zone is set over the back wall of the gallbladder
to maximize the chances of identifying small
stones (see Chapters 1 and 3).
Alter the time gain compensation (TGC) to
eliminate or minimize anterior artefacts and
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●
reverberation echoes inside the gallbladder,
particularly in the near field.
Use tissue harmonic imaging to reduce artifact
within the gallbladder and sharpen the image
of the wall (particularly in a large abdomen).
Always scan the gallbladder in at least two
planes (find the gallbladder’s long axis,
incorporating the neck and fundus; sweep from
side to side, then transversely from neck to
fundus) and two patient positions. You will
almost certainly miss pathology if you do not.